snapshot of https://github.com/tldraw/tldraw.git (main, 2026-09-23; blobs > 131072B omitted)

packages/editor/setupVitest.js

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+// Vitest setup file for editor package
+
+// IndexedDB polyfill for browser storage testing
+require('fake-indexeddb/auto')
+
+// ResizeObserver polyfill for DOM observation testing
+global.ResizeObserver = require('resize-observer-polyfill')
+
+// Crypto polyfill for cryptographic operations
+global.crypto ??= new (require('@peculiar/webcrypto').Crypto)()
+
+// FontFace API polyfill for font testing
+global.FontFace = class FontFace {
+	load() {
+		return Promise.resolve()
+	}
+}
+
+// Document fonts API mock
+document.fonts = {
+	add: () => {},
+	delete: () => {},
+	forEach: () => {},
+	[Symbol.iterator]: () => [][Symbol.iterator](),
+}
+
+// Window fetch mock for network requests
+window.fetch = async (input, init) => {
+	return {
+		ok: true,
+		json: async () => [],
+	}
+}
+
+// Window.matchMedia polyfill for media queries
+// Use a conditional approach to avoid conflicts with jsdom
+window.matchMedia = (query) => ({
+	matches: false,
+	media: query,
+	onchange: null,
+	addListener: () => {},
+	removeListener: () => {},
+	addEventListener: () => {},
+	removeEventListener: () => {},
+	dispatchEvent: () => {},
+})
+
+// Mock DragEvent for jsdom
+if (typeof window !== 'undefined' && !window.DragEvent) {
+	global.DragEvent = class DragEvent extends Event {
+		dataTransfer = {
+			getData: () => '',
+			setData: () => {},
+			files: [],
+		}
+
+		constructor(type, options = {}) {
+			super(type, options)
+			this.dataTransfer = options.dataTransfer || {
+				getData: () => '',
+				setData: () => {},
+				files: [],
+			}
+		}
+	}
+}